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Spanish short selling: week 39, 2025

From 22 Sep 2025 to 26 Sep 2025, 30 Spain companies had disclosed short positions across 5 publication days. Changes are percentage points (pp) of issued share capital, between each company's last figure before the week and its last figure of the week, from official CNMV data.

Biggest rises

CompanyStartEndChange (pp)
ORYZON GENOMICS, S.A.1.70%2.31%+0.61
SOLARIA ENERGIA Y MEDIOAMBIENTE, S.A.10.04%10.23%+0.19
ATRESMEDIA CORPORACION DE MEDIOS DE COMUNICACION, S.A.0.51%0.60%+0.09

Biggest falls

CompanyStartEndChange (pp)
EDREAMS ODIGEO, S.A.0.95%0.50%−0.45
ACCIONA, S.A.2.40%2.02%−0.38
ENAGAS, S.A.9.54%9.51%−0.03

New disclosures

No companies entered the dataset this week.

Most shorted at week end

  1. SOLARIA ENERGIA Y MEDIOAMBIENTE, S.A., 10.23%
  2. ENAGAS, S.A., 9.51%
  3. REPSOL, S.A., 2.80%
  4. ORYZON GENOMICS, S.A., 2.31%
  5. GRIFOLS, S.A., 2.23%

Full table: most shorted Spanish stocks.